This code was reviewed here https://p4-swarm.epicgames.net/reviews/25007278 but that CL was into //UE5/Main. We want the change to be into //Fortnite/Main, hence this CL
#jira UE-181649
#preflight 6442a3894944ef78926d17a3
#rb semion.piskarev, jimmy.andrews, ryan.schmidt
[CL 25150696 by matija kecman in ue5-main branch]
Add support for Tools to provide an "output" selection. Add UGeometrySelectionManager::SetSelectionForComponent() which can set an explicit externally-provided selection. FBaseDynamicMeshSelector::UpdateSelectionFromSelection() now supports selection conversion when available and requested (is used to implement SetSelectionForComponent). New GeometrySelectionUtil functions InitializeSelectionFromTriangles() and ConvertSelection() are used to implement this (note: only Triangles->other conversion is currently supported). Add HaveAvailableGeometrySelection() and SetToolOutputGeometrySelectionForTarget() in StoredMeshSelectionUtil.h, this is the top-level function that Tools can use to set an Output selection.
ExtrudeMeshSelectionTool now emits output selection.
Update EditMeshPolygonsTool to use new Selection system and allow individual operations to be utilized as standalone Tools. Convert EditMeshPolygonsTool to be a USingleTargetWithSelectionTool, use FGeometrySelection to initialize selection. Add bTerminateOnPendingActionComplete flag, which is set when Tool is directly initialized to a specific operation, and forces tool to shut down when operation completes. This allows it to be used to more cleanly implement multiple action buttons in Modeling UI. When in this mode, selection panels are not shown. On Shutdown, now emits an "output" selection which GeometrySelectionManager can use to provide new selection to user. Update UPolygonSelectionMechanic Set/Get selection APIs to use FGeometrySelection instead of UPersistentMeshSelection.
port UVProjectionTool to derive from USingleTargetWithSelectionTool, use FGeometrySelection to initialize target ROI
deprecate UPersistentMeshSelection and related functions in StoredMeshSelectionUtil.h. Deprecate Tool Input Selection APIs in USingleSelectionMeshEditingTool and Builder.
Repurpose old ModelingMode-level PolyModel tab operations for new Selection Tools UI, now support Inset, Outset, Cut Faces, Insert Edge Loop, PushPull, and Bevel.
#rb none
#preflight 63c84fa2b065224750b9831f
[CL 23766643 by ryan schmidt in ue5-main branch]
Introduced FGeometrySelectionHitQueryConfig (GeometrySelection.h), this provides information about the active selection mode. FGeometrySelectionEditor now tracks active FGeometrySelectionHitQueryConfig.
IGeometrySelector hit-testing/processing functions now take a struct FWorldRayQueryInfo that combines a FRay3d with FViewCameraState, to allow for (eg) snapping wrt the active camera/etc
Added FGeometrySelectionPreview, this is a utility subclass of FGeometrySelectionEditor that is used for selection-preview highlighting, relative to a base FGeometrySelectionEditor
Added IGeometrySelector::GetSelectionPreviewForRaycast() which is used to accumulate a preview of what might be selected in a FGeometrySelectionPreview. AccumulateSelectionElements() can also now accumulate 'preview' geometry, and FDynamicMeshSelector uses this to provide the edge-loop of a facegroup for it's preview (as providing all triangles is too expensive for hover highlighting on hires meshes).
Added support for hover-highlighting mechanic in UGeometrySelectionManager and UModelingSelectionInteraction
FDynamicMeshSelector now creates a GroupEdgeSegmentTree for polygroup edges. This allows for better selection interaction, eg no dependency on the edge-adjacent triangles.
Added AreSelectionsIdentical() function in GeometrySelectionUtil.h
#rb none
#preflight 638145b318176c67c2785280
[CL 23300258 by ryan schmidt in ue5-main branch]
GeometrySelectionUtil: add FindByTopologyID function, to search a Selection for selected element with matching TopologyID but ignoring GeometryID. Update FGeometryScriptMeshSelection::CombineSelectionInPlace() to use this, as it was not properly combining Polygroup selections.
#rb none
#preflight 630501435a5d4e462428af90
[CL 21516930 by Ryan Schmidt in ue5-main branch]
